Raging

This weapon's blade (or other damaging surface) is tinged an angry red. Powers: If the wielder of a raging weapon takes hit point damage, there is a percentage chance equal to the damage dealt that she immediately enters a rage equivalent to that employed by a 1st-level barbarian, except that she is not exhausted after the rage. If the wielder is a barbarian, the rage is equivalent instead to that available to a barbarian of her level. This rage does not count against her number of rages per day. If the barbarian is already raging when this ability activates, the length of her rage is extended by 5 rounds and she is not exhausted afterward. This property activates only once per hour. This weapon bestows one negative level on any lawful creature attempting to wield it. The negative level remains as long as the weapon is in hand and disappears when the weapon is no longer wielded. This negative level never results in actual level loss, but it cannot be overcome in any way (including restoration spells) while the weapon is wielded.